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3 years ago

Write an equation. Let x be the unknown number. seven is 4 less than twice a number.

Mathematics

2 answers:

mel-nik [20]3 years ago

7 0

Answer:

2x + 4 = 7

Step-by-step explanation:

If X is the unknown number, then twice that would be 2x, and you add 4, wich would be equal to 7: 2x + 4 = 7

geniusboy [140]3 years ago

5 0

Answer::espero haberte ayudado

7:4-X.2

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A rocket is launched from a tower. The height of the rocket, y in feet, is related to the

stiv31 [10]

Answer:

8.67 seconds.

Step-by-step explanation:

I hope this helps!

3 0

3 years ago

What is 3(x+2)-4= -(x-6)?? I need the answer to x??

Nataly_w [17]

Answer:

x=1

Step-by-step explanation:

3x+2= -x+6

4x=4, x=1

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2 years ago

Read 2 more answers

Not all visitors to a certain company's website are customers. In fact, the website administrator estimates that about 5% of all

Gnom [1K]

Answer:

0.0135 = 1.35% probability that, in a random sample of 4 visitors to the website, exactly 2 actually are looking for the website.

Step-by-step explanation:

For each visitor of the website, there are only two possible outcomes. Either they are looking for the website, or they are not. The probability of a customer being looking for the website is independent of other customers. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

5% of all visitors to the website are looking for other websites.

So 100 - 5 = 95% are looking for the website, which means that $p = 0.95$

Find the probability that, in a random sample of 4 visitors to the website, exactly 2 actually are looking for the website.

This is P(X = 2) when n = 4. So

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = x) = C_{4,2}.(0.95)^{2}.(0.05)^{2} = 0.0135$

0.0135 = 1.35% probability that, in a random sample of 4 visitors to the website, exactly 2 actually are looking for the website.

5 0

2 years ago

O.012 in words from

Scrat [10]

Answer:

word form of 0.012 is

zero point zero one two

Step-by-step explanation:

.-point

0-zero

1-one

2-two

3-three

4-four

5-five

6-six

7-seven

8-eight

9-nine

10-ten

4 0

2 years ago

Jim's backyard is a rectangle that is 15 5/6 yards long and 10 2/5 yards wide. Jim buys sod in pieces that are 1 1/3 long and 1

ser-zykov [4K]

The are of his backyard is 10.4 times 15.83 or 164.632 yd^2
the sod piecs are 1.33 by 1.33 or 1.78 yd^2
so divide 164.632 by 1.78 or
164.632/1.78=92.5 pieces of sod
if he is buying the sod in pieces, he will have to buy 93 pieces because he can't buy 1/2 sod

4 0

3 years ago